test/test_sixrd.py

   1 #!/usr/bin/env python
   2 """ 6RD RFC5969 functional tests """
   3
   4 import unittest
   5 from scapy.layers.inet import IP, UDP, Ether
   6 from scapy.layers.inet6 import IPv6
   7 from scapy.packet import Raw
   8 from framework import VppTestCase, VppTestRunner
   9 from vpp_ip import DpoProto
  10 from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable
  11 from socket import AF_INET, AF_INET6, inet_pton
  12
  13 """ Test6rd is a subclass of  VPPTestCase classes.
  14
  15 6RD tests.
  16
  17 """
  18
  19
  20 class Test6RD(VppTestCase):
  21     """ 6RD Test Case """
  22
  23     @classmethod
  24     def setUpClass(cls):
  25         super(Test6RD, cls).setUpClass()
  26         cls.create_pg_interfaces(range(4))
  27         cls.interfaces = list(cls.pg_interfaces)
  28
  29     def setUp(self):
  30         super(Test6RD, self).setUp()
  31         t4 = VppIpTable(self, 10)
  32         t6 = VppIpTable(self, 20, True)
  33
  34         t4.add_vpp_config()
  35         t6.add_vpp_config()
  36
  37         for n in range(4):
  38             i = self.pg_interfaces[n]
  39             i.admin_up()
  40             if (n > 1):
  41                 i.set_table_ip4(10)
  42                 i.set_table_ip6(20)
  43             i.config_ip4()
  44             i.config_ip6()
  45             i.disable_ipv6_ra()
  46             i.resolve_arp()
  47             i.resolve_ndp()
  48
  49     def tearDown(self):
  50         for i in self.pg_interfaces:
  51             i.unconfig_ip4()
  52             i.unconfig_ip6()
  53             i.set_table_ip4(0)
  54             i.set_table_ip6(0)
  55         super(Test6RD, self).tearDown()
  56
  57     def validate_6in4(self, rx, expected):
  58         if IP not in rx:
  59             self.fail()
  60         if IPv6 not in rx:
  61             self.fail()
  62
  63         self.assertEqual(rx[IP].src, expected[IP].src)
  64         self.assertEqual(rx[IP].dst, expected[IP].dst)
  65         self.assertEqual(rx[IP].proto, expected[IP].proto)
  66         self.assertEqual(rx[IPv6].src, expected[IPv6].src)
  67         self.assertEqual(rx[IPv6].dst, expected[IPv6].dst)
  68
  69     def validate_4in6(self, rx, expected):
  70         if IPv6 not in rx:
  71             self.fail()
  72         if IP in rx:
  73             self.fail()
  74
  75         self.assertEqual(rx[IPv6].src, expected[IPv6].src)
  76         self.assertEqual(rx[IPv6].dst, expected[IPv6].dst)
  77         self.assertEqual(rx[IPv6].nh, expected[IPv6].nh)
  78
  79     def payload(self, len):
  80         return 'x' * len
  81
  82     def test_6rd_ip6_to_ip4(self):
  83         """ ip6 -> ip4 (encap) 6rd test """
  84         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
  85         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0202::1", nh='UDP')
  86
  87         rv = self.vapi.ipip_6rd_add_tunnel(0, 0, inet_pton(AF_INET6, '2002::'),
  88                                            inet_pton(AF_INET, '0.0.0.0'),
  89                                            self.pg0.local_ip4n, 16, 0, True)
  90         self.tunnel_index = rv.sw_if_index
  91
  92         self.vapi.cli("show ip6 fib")
  93         p_payload = UDP(sport=1234, dport=1234)
  94         p = (p_ether / p_ip6 / p_payload)
  95
  96         p_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
  97                       proto='ipv6') / p_ip6)
  98
  99         rx = self.send_and_expect(self.pg0, p * 10, self.pg1)
 100         for p in rx:
 101             self.validate_6in4(p, p_reply)
 102
 103         # MTU tests (default is 1480)
 104         plen = 1481 - 40 - 8
 105         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0202::1")
 106         p_payload = UDP(sport=1234, dport=1234) / Raw(self.payload(plen))
 107         p = (p_ether / p_ip6 / p_payload)
 108
 109         p_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
 110                       proto='ipv6') / p_ip6)
 111
 112         rx = self.send_and_assert_no_replies(self.pg0, p * 10)
 113         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 114
 115     def test_6rd_ip6_to_ip4_vrf(self):
 116         """ ip6 -> ip4 (encap) 6rd VRF test """
 117         p_ether = Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac)
 118         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0402::1", nh='UDP')
 119
 120         rv = self.vapi.ipip_6rd_add_tunnel(20, 10,
 121                                            inet_pton(AF_INET6, '2002::'),
 122                                            inet_pton(AF_INET, '0.0.0.0'),
 123                                            self.pg2.local_ip4n, 16, 0, True)
 124         self.tunnel_index = rv.sw_if_index
 125
 126         self.vapi.cli("show ip6 fib")
 127         p_payload = UDP(sport=1234, dport=1234)
 128         p = (p_ether / p_ip6 / p_payload)
 129
 130         p_reply = (IP(src=self.pg2.local_ip4, dst=self.pg3.remote_ip4,
 131                       proto='ipv6') / p_ip6)
 132
 133         rx = self.send_and_expect(self.pg2, p * 10, self.pg3)
 134         for p in rx:
 135             self.validate_6in4(p, p_reply)
 136
 137         # MTU tests (default is 1480)
 138         plen = 1481 - 40 - 8
 139         p_ip6 = IPv6(src="1::1", dst="2002:AC10:0402::1")
 140         p_payload = UDP(sport=1234, dport=1234) / Raw(self.payload(plen))
 141         p = (p_ether / p_ip6 / p_payload)
 142
 143         p_reply = (IP(src=self.pg2.local_ip4, dst=self.pg3.remote_ip4,
 144                       proto='ipv6') / p_ip6)
 145
 146         rx = self.send_and_assert_no_replies(self.pg0, p * 10)
 147         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 148
 149     def test_6rd_ip4_to_ip6(self):
 150         """ ip4 -> ip6 (decap) 6rd test """
 151
 152         rv = self.vapi.ipip_6rd_add_tunnel(0, 0, inet_pton(AF_INET6, '2002::'),
 153                                            inet_pton(AF_INET, '0.0.0.0'),
 154                                            self.pg0.local_ip4n, 16, 0, True)
 155         self.tunnel_index = rv.sw_if_index
 156         rv = self.vapi.ipip_6rd_del_tunnel(rv.sw_if_index)
 157         rv = self.vapi.ipip_6rd_add_tunnel(0, 0, inet_pton(AF_INET6, '2002::'),
 158                                            inet_pton(AF_INET, '0.0.0.0'),
 159                                            self.pg0.local_ip4n, 16, 0, True)
 160         self.tunnel_index = rv.sw_if_index
 161
 162         p_ip6 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) /
 163                  UDP(sport=1234, dport=1234))
 164
 165         p = (Ether(src=self.pg0.remote_mac,
 166                    dst=self.pg0.local_mac) /
 167              IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) /
 168              p_ip6)
 169
 170         p_reply = p_ip6
 171
 172         rx = self.send_and_expect(self.pg0, p * 10, self.pg1)
 173         for p in rx:
 174             self.validate_4in6(p, p_reply)
 175         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 176
 177     def test_6rd_ip4_to_ip6_vrf(self):
 178         """ ip4 -> ip6 (decap) 6rd VRF test """
 179
 180         rv = self.vapi.ipip_6rd_add_tunnel(20, 10,
 181                                            inet_pton(AF_INET6, '2002::'),
 182                                            inet_pton(AF_INET, '0.0.0.0'),
 183                                            self.pg2.local_ip4n, 16, 0, True)
 184         self.tunnel_index = rv.sw_if_index
 185         rv = self.vapi.ipip_6rd_del_tunnel(rv.sw_if_index)
 186         rv = self.vapi.ipip_6rd_add_tunnel(20, 10,
 187                                            inet_pton(AF_INET6, '2002::'),
 188                                            inet_pton(AF_INET, '0.0.0.0'),
 189                                            self.pg2.local_ip4n, 16, 0, True)
 190         self.tunnel_index = rv.sw_if_index
 191         self.vapi.sw_interface_set_table(self.tunnel_index, 1, 20)
 192
 193         p_ip6 = (IPv6(src="2002:AC10:0402::1", dst=self.pg3.remote_ip6) /
 194                  UDP(sport=1234, dport=1234))
 195
 196         p = (Ether(src=self.pg2.remote_mac,
 197                    dst=self.pg2.local_mac) /
 198              IP(src=self.pg3.remote_ip4, dst=self.pg2.local_ip4) /
 199              p_ip6)
 200
 201         p_reply = p_ip6
 202
 203         rx = self.send_and_expect(self.pg2, p * 10, self.pg3)
 204         for p in rx:
 205             self.validate_4in6(p, p_reply)
 206         self.vapi.sw_interface_set_table(self.tunnel_index, 1, 0)
 207         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 208
 209     def test_6rd_ip4_to_ip6_multiple(self):
 210         """ ip4 -> ip6 (decap) 6rd test """
 211
 212         self.tunnel_index = []
 213         rv = self.vapi.ipip_6rd_add_tunnel(0, 0, inet_pton(AF_INET6, '2002::'),
 214                                            inet_pton(AF_INET, '0.0.0.0'),
 215                                            self.pg0.local_ip4n, 16, 0, True)
 216         self.tunnel_index.append(rv.sw_if_index)
 217
 218         rv = self.vapi.ipip_6rd_add_tunnel(0, 0, inet_pton(AF_INET6, '2003::'),
 219                                            inet_pton(AF_INET, '0.0.0.0'),
 220                                            self.pg1.local_ip4n, 16, 0, True)
 221         self.tunnel_index.append(rv.sw_if_index)
 222
 223         self.vapi.cli("show ip6 fib")
 224         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
 225         p_ip4 = IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4)
 226         p_ip6_1 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) /
 227                    UDP(sport=1234, dport=1234))
 228         p_ip6_2 = (IPv6(src="2003:AC10:0202::1", dst=self.pg1.remote_ip6) /
 229                    UDP(sport=1234, dport=1234))
 230
 231         p = (p_ether / p_ip4 / p_ip6_1)
 232         rx = self.send_and_expect(self.pg0, p * 10, self.pg1)
 233         for p in rx:
 234             self.validate_4in6(p, p_ip6_1)
 235
 236         p = (p_ether / p_ip4 / p_ip6_2)
 237         rx = self.send_and_expect(self.pg0, p * 10, self.pg1)
 238         for p in rx:
 239             self.validate_4in6(p, p_ip6_2)
 240         for i in self.tunnel_index:
 241             self.vapi.ipip_6rd_del_tunnel(i)
 242
 243     def test_6rd_ip4_to_ip6_suffix(self):
 244         """ ip4 -> ip6 (decap) 6rd test """
 245
 246         rv = self.vapi.ipip_6rd_add_tunnel(0, 0, inet_pton(AF_INET6, '2002::'),
 247                                            inet_pton(AF_INET, '172.0.0.0'),
 248                                            self.pg0.local_ip4n, 16, 8, True)
 249
 250         self.tunnel_index = rv.sw_if_index
 251
 252         self.vapi.cli("show ip6 fib")
 253         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
 254         p_ip4 = IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4)
 255         p_ip6 = (IPv6(src="2002:1002:0200::1", dst=self.pg1.remote_ip6) /
 256                  UDP(sport=1234, dport=1234))
 257
 258         p = (p_ether / p_ip4 / p_ip6)
 259         rx = self.send_and_expect(self.pg0, p * 10, self.pg1)
 260         for p in rx:
 261             self.validate_4in6(p, p_ip6)
 262         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 263
 264     def test_6rd_ip4_to_ip6_sec_check(self):
 265         """ ip4 -> ip6 (decap) security check 6rd test """
 266
 267         rv = self.vapi.ipip_6rd_add_tunnel(0, 0, inet_pton(AF_INET6, '2002::'),
 268                                            inet_pton(AF_INET, '0.0.0.0'),
 269                                            self.pg0.local_ip4n, 16, 0, True)
 270         self.tunnel_index = rv.sw_if_index
 271
 272         self.vapi.cli("show ip6 fib")
 273         p_ip6 = (IPv6(src="2002:AC10:0202::1", dst=self.pg1.remote_ip6) /
 274                  UDP(sport=1234, dport=1234))
 275         p_ip6_fail = (IPv6(src="2002:DEAD:0202::1", dst=self.pg1.remote_ip6) /
 276                       UDP(sport=1234, dport=1234))
 277
 278         p = (Ether(src=self.pg0.remote_mac,
 279                    dst=self.pg0.local_mac) /
 280              IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) /
 281              p_ip6)
 282
 283         p_reply = p_ip6
 284
 285         rx = self.send_and_expect(self.pg0, p * 10, self.pg1)
 286         for p in rx:
 287             self.validate_4in6(p, p_reply)
 288
 289         p = (Ether(src=self.pg0.remote_mac,
 290                    dst=self.pg0.local_mac) /
 291              IP(src=self.pg1.remote_ip4, dst=self.pg0.local_ip4) /
 292              p_ip6_fail)
 293         rx = self.send_and_assert_no_replies(self.pg0, p * 10)
 294         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 295
 296     def test_6rd_bgp_tunnel(self):
 297         """ 6rd BGP tunnel """
 298
 299         rv = self.vapi.ipip_6rd_add_tunnel(0, 0, inet_pton(AF_INET6, '2002::'),
 300                                            inet_pton(AF_INET, '0.0.0.0'),
 301                                            self.pg0.local_ip4n, 16, 0, False)
 302         self.tunnel_index = rv.sw_if_index
 303
 304         default_route = VppIpRoute(
 305             self, "DEAD::", 16, [VppRoutePath("2002:0808:0808::",
 306                                               self.tunnel_index,
 307                                               proto=DpoProto.DPO_PROTO_IP6)],
 308             is_ip6=1)
 309         default_route.add_vpp_config()
 310
 311         ip4_route = VppIpRoute(self, "8.0.0.0", 8,
 312                                [VppRoutePath(self.pg1.remote_ip4, 0xFFFFFFFF)])
 313         ip4_route.add_vpp_config()
 314
 315         # Via recursive route 6 -> 4
 316         p = (Ether(src=self.pg0.remote_mac,
 317                    dst=self.pg0.local_mac) /
 318              IPv6(src="1::1", dst="DEAD:BEEF::1") /
 319              UDP(sport=1234, dport=1234))
 320
 321         p_reply = (IP(src=self.pg0.local_ip4, dst="8.8.8.8",
 322                       proto='ipv6') /
 323                    IPv6(src='1::1', dst='DEAD:BEEF::1', nh='UDP'))
 324
 325         rx = self.send_and_expect(self.pg0, p * 10, self.pg1)
 326         for p in rx:
 327             self.validate_6in4(p, p_reply)
 328
 329         # Via recursive route 4 -> 6 (Security check must be disabled)
 330         p_ip6 = (IPv6(src="DEAD:BEEF::1", dst=self.pg1.remote_ip6) /
 331                  UDP(sport=1234, dport=1234))
 332         p = (Ether(src=self.pg0.remote_mac,
 333                    dst=self.pg0.local_mac) /
 334              IP(src="8.8.8.8", dst=self.pg0.local_ip4) /
 335              p_ip6)
 336
 337         p_reply = p_ip6
 338
 339         rx = self.send_and_expect(self.pg0, p * 10, self.pg1)
 340         for p in rx:
 341             self.validate_4in6(p, p_reply)
 342         ip4_route.remove_vpp_config()
 343         default_route.remove_vpp_config()
 344         self.vapi.ipip_6rd_del_tunnel(self.tunnel_index)
 345
 346
 347 if __name__ == '__main__':
 348     unittest.main(testRunner=VppTestRunner)